Descend toward the deepest point in the Mediterranean Sea — the legendary Calypso Deep in the Hellenic Trench. A private guided freediving and snorkeling expedition above these storied waters, with a certified master instructor, is a once-in-a-lifetime aquatic pilgrimage.
What to expect
You depart Pylos harbour aboard a dedicated dive tender, your PADI master instructor briefing you on the geological wonder beneath. The crystal-clear Ionian water offers 30m+ visibility as you snorkel or freedive above Europe's deepest abyss. Between dives, your guide shares the story of Jacques Cousteau's original Calypso expedition that named this trench. You return to port with the rare distinction of having floated above waters no sunlight has ever reached.
Good to know
Port of Pylos is approx. 5 min from the dive centre on foot. Pre-book at least 2 weeks in advance; groups capped at 6. All-aboard times are typically 18:00 — the half-day morning session (08:30–13:00) gives ample buffer. Bring reef-safe sunscreen; wetsuits provided.